Year	Total
1965	19169000
1966	17487000
1967	17162000
1968	17718000
1969	17256000
1970	16263000
1971	13467000
1972	12862000
1973	10793000
1974	11545000
1975	8622400
1976	8985700
1977	9114000
1978	9333100
1979	10399000
1980	10483000
1981	10859000
1982	10876000
1983	9281200
1984	10763000
1985	10733000
1986	9158200
1987	9113800
1988	9209700
1989	9676200
1990	10597000
1991	10063000
1992	9213800
1993	8493000
1994	8967100
1995	8652000
1996	8260700
1997	7980900
1998	8051500
1999	7060000
2000	8001600
2001	7402900
2002	6404500
2003	6013500
2004	5867700
2005	5171900
2006	4951900
2007	4420200
2008	4548700
2009	3137300
2010	3762900
2011	3512100
2012	3215300
2013	3343500
2014	3332700
2015	3183100
2016	2978400